Home / 1,522.80-2,283.44-742.86

Finding the Fourth Proportional to 1,522.80, 2,283.44 and 742.86

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Solution

The fourth proportional to 1,522.80, 2,283.44 and 742.86 is: 1,113.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,522.80 : 2,283.44 = 742.86 : x
  2. Step 2: Convert to fraction form
    1,522.80/2,283.44 = 742.86/x
  3. Step 3: Cross multiply
    1,522.80x = 2,283.44 × 742.86
  4. Step 4: Simplify right side
    1,522.80x = 1,696,272.52
  5. Step 5: Solve for x
    x = 1,696,272.52/1,522.80
  6. Step 6: Final answer
    x = 1,113.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.